Trans wire / front wire?


Old 03-18-07, 02:52 AM
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Join Date: Jul 2005
Posts: 48
Trans wire / front wire?

I have ANOTHER question about adding a door chime:

I can't read my current transformer, because it's caked in drywall compound and paint. (I'll be replacing it anyway.) So I need to know which wire is which.

Pleaselook at John Nelson's Parallel wiring diagram located on this web link: ( Which wire (Black or Yellow) is connected to the screw marked Trans, & which is connected to the screw marked front? (I'm afraid to assume the diagram's black wire is attached to the screw marked front.)

Thanks, Anna
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Old 03-18-07, 04:37 AM
Join Date: Oct 2006
Location: Wilmington
Posts: 4,219
There is no polarity with a tranformer bell system. It is low voltage AC.

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